Factors affecting dynamic electrical manipulation of menisci

Graham S. Wright; Philip T Krein; John C. Chato

doi:10.1109/28.195895

Factors affecting dynamic electrical manipulation of menisci

Graham S. Wright, Philip T Krein, John C. Chato

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The dynamics of a conductive meniscus subjected to an external field are examined with a view toward drop-on-demand applications. A low-order model suitable for exploring parametric effects is developed. Equilibrium and stability criteria are derived for the purpose of estimating electric field requirements. The criteria are expressed in terms of dimensionless pressures due to electric stress, gravity, and hydrostatic head, normalized to surface tension pressure. Eigenvalues of the linearized model yield a formula for characteristic frequency analogous to Rayleigh’s formula for a free drop and, in addition, indicate that most liquids will show underdamped behavior. Requirements for critical damping are derived and illustrated with root locus plots.

Original language	English (US)
Pages (from-to)	103-112
Number of pages	10
Journal	IEEE Transactions on Industry Applications
Volume	29
Issue number	1
DOIs	https://doi.org/10.1109/28.195895
State	Published - Jan 1 1993

ASJC Scopus subject areas

Control and Systems Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1109/28.195895

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abstract = "The dynamics of a conductive meniscus subjected to an external field are examined with a view toward drop-on-demand applications. A low-order model suitable for exploring parametric effects is developed. Equilibrium and stability criteria are derived for the purpose of estimating electric field requirements. The criteria are expressed in terms of dimensionless pressures due to electric stress, gravity, and hydrostatic head, normalized to surface tension pressure. Eigenvalues of the linearized model yield a formula for characteristic frequency analogous to Rayleigh{\textquoteright}s formula for a free drop and, in addition, indicate that most liquids will show underdamped behavior. Requirements for critical damping are derived and illustrated with root locus plots.",

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Factors affecting dynamic electrical manipulation of menisci

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